I am also running the very latest Sway and have no issues with other Wayland applications. I am seeing the same slowness you describe, as I'd been seeing with t

I am also running the very latest Sway and have no issues with other Wayland applications. I am seeing the same slowness you describe, as I'd been seeing with the Flatpak nightly Wayland builds. It's also still not respecting my Caps Lock. I'm waiting to hear from someone running it under GNOME/Wayland before filing bugs, though.